She was born Joy Brown in Salt Lake City, and she would be later known as Joyce Wassmansdorff. A girl who blossomed into a woman at a young age, Joi began modeling swimwear when she was only 13, and she signed a contract with MGM at 14.
Joi was a very successful model in the 1940s, landing on the cover of Life magazine in 1949.
She briefly appeared in the classic "Singin' in the Rain" in 1952, and she's also remembered for Orson Welles' "Touch of Evil" (1958), but many of her roles were as walk-ons in fortgettable movies.
Joi's TV credits included a recurring role as model Shirley Swanson in the Bob Cummings series "All About Bob" (1955-59), and she guest-starred in a variety of series, from Petticoat Junction" to "Maverick" to "Perry Mason."
Joi earned a starring role in the Western series "Klondike" in 1960, but the show lasted only 17 episodes.